“I've always felt that a person's intelligence is directly reflected by the number of conflicting points of view he can entertain simultaneously on the same topic.
“Animals, in their generation, are wiser than the sons of men; but their wisdom is confined to a few particulars, and lies in a very narrow compass
“Neither a lofty degree of intelligence nor imagination nor both together go to the making of genius. Love, love, love, that is the soul of genius
“Thought means life, since those who do not think so do not live in any high or real sense. Thinking makes the man
“For where the instrument of intelligence is added to brute power and evil will, mankind is powerless in its own defense
“Less than fifteen percent of the people do any original thinking on any subject . . . The greatest torture in the world for most people is to think
“It is mind which does the work of the world, so that the more there is of mind, the more work will be accomplished
“Of all treasons against humanity, there is no one worse than his who employs great intellectual force to keep down the intellect of his less favored brothers
“Cruelty is, perhaps, the worst kind of sin. Intellectual cruelty is certainly the worst kind of cruelty
“It is not the strongest of the species that survive, nor the most intelligent, but the one most responsive to change